HONG KONG, Feb. 3 (Xinhua) -- The Hang Seng Index lost 176.24 points, or 0.87 percent, to open at 20,048.87 points on Monday, the first trading day of the Year of the Snake in Hong Kong.
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.